Hair growth and/or regrowth compositions

- McNeil-PPC, Inc.

The present disclosure relates to compositions containing certain pyrimidine compounds such as minoxidil and/or certain pyrimidine sulfate (inner salt) compounds such as minoxidil sulfate and especially compositions containing pyrimidine compounds in combination with an admixtures comprising at least one antioxidant, at least one organic acid and a select fatty acid mixture. The present disclosure also relates to use of the compositions to grow and/or regrow hair and/or prevent hair loss in mammals and particularly in humans.

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Description

This is a divisional application of U.S. application Ser. No. 12/638,091 filed Dec. 15, 2009.

TECHNICAL FIELD

The present disclosure relates to compositions containing certain pyrimidine compounds such as minoxidil and/or certain pyrimidine sulfate (inner salt) compounds such as minoxidil sulfate and especially compositions containing pyrimidine compounds in combination with admixtures comprising at least one antioxidant, at least one organic acid and a select fatty acid mixture. The present disclosure also relates to use of the compositions to grow hair and/or prevent hair loss in mammals and particularly in humans.

BACKGROUND

Various pyrimidine compounds have been suggested as being useful for growing and/or regrowing hair in mammals including humans. For example, see U.S. Pat. No. 4,139,619 to Chidsey, III, disclosure of which is incorporated herein by reference. In particular, minoxidil (6-amino- 1, 2-dihydro-1-hydroxy-2-imino-4-piperidinopyrimidine is currently used commercially as a hair growth agent for use in the treatment of male pattern baldness.

More recently, the use of certain pyrimidine sulfates, such as minoxidil sulfate, have been suggested as being useful for growing hair in mammals. In particular, see U.S. Pat. No. 4,287,338. It is disclosed that the sulfates are faster and more potent than minoxidil in promoting hair growth.

In certain situations and/or market segments, faster and/or thicker hair growth or regrowth is a continuing desire and goal, hence, work continues in developing improved hair growth preparations.

Accordingly, an aspect of the present invention is to provide hair growth and/or regrowth composition useful in treating or preventing hair loss or providing a thicker or richer hair coat.

Another aspect of the present disclosure is concerned with using compositions of this disclosure to accelerate the onset of the anagen phase of hair growth in a mammal.

Another aspect of the present disclosure is concerned with using compositions of this disclosure to increase the rate at which terminal hair covers a given area of treated skin.

A still further aspect of this disclosure is concerned with providing compositions comprising at least one pyrimidine compound and an mixture comprising at least one antioxidant, at least one organic acid and a select fatty acid mixture or source of the select fatty acid mixture of for improved treatment or prevention of hair loss.

SUMMARY OF THE INVENTION

According to the present disclosure, preparations are provided that contain at least one of the pyrimidine compounds as disclosed in U.S. Pat. No. 4,139,619 and/or at least one of the pyrimidine sulfate compounds as disclosed in U.S. Pat. No. 4,287,338, both of which patents are herein incorporated by reference.

More particularly, in one embodiment, the present disclosure relates to hair growth or hair regrowth compositions comprising;

    • a. at least one compound selected from the group consisting of compounds represented by the formulae:

      • and mixtures thereof,
      • wherein R1 is a moiety selected from the group consisting of moieties of the formula —N(R3)(R4), wherein R3 and R4 are selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower aralkyl, and lower cycloalkyl, and taken together R3 and R4 may be a heterocyclic moiety selected from the group consisting of aziridinyl, azetidinyl, pyrrolidinyl, piperidino, hexahydroazepinyl, heptamethylenimino, octamethylenimino, morpholino, and 4-lower-alkylpiperazinyl, each of said heterocyclic moieties having attached as substituents on the carbon atoms 0 to 3 lower alkyl groups, hydroxy or alkoxy; and wherein R2 is selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower alkoxyalkyl, lower cycloalkyl, lower aryl, lower aralkyl, lower alkaryl, lower alkaralkyl, lower alkoxyaralkyl, and lower haloaralkyl and the pharmacologically acceptable acid addition salts thereof; and
    • b. from about 0.1% to about 99%, optionally from about 5% to about 50%, and optionally from about 10% to about 40%, optionally from about 15% to about 30%, by weight of the composition of an admixture, comprising:
      • i. optionally, from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the admixture of an acid selected from the group consisting of intermediates of the Kreb cycle, a non-Kreb cycle intermediate alpha keto acid, derivatives thereof and mixtures thereof;
      • ii. optionally, from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the admixture of an antioxidant; and
      • iii. from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the admixture of a fatty acid mixture or fatty acid mixture source comprising at least 7, optionally at least 14, and optionally at least 22, unsaturated or saturated fatty acids selected from the group consisting of, but not limited to, butyric acid, caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, gadoleic acid, pentadecanoic acid, margaric acid, margaroleic acid, behenic acid, dihomolinoleic acid, arachidonic acid and lignoceric acid.

In another embodiment, the present disclosure relates to hair growth or hair regrowth compositions comprising;

    • a. at least one compound selected from the group consisting of compounds represented by the formulae:

      • and mixtures thereof,
      • wherein R1 is a moiety selected from the group consisting of moieties of the formula —N(R3)(R4), wherein R3 and R4 are selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower aralkyl, and lower cycloalkyl, and taken together R3 and R4 may be a heterocyclic moiety selected from the group consisting of aziridinyl, azetidinyl, pyrrolidinyl, piperidino, hexahydroazepinyl, heptamethylenimino, octamethylenimino, morpholino, and 4-lower-alkylpiperazinyl, each of said heterocyclic moieties having attached as substituents on the carbon atoms 0 to 3 lower alkyl groups, hydroxy or alkoxy; and wherein R2 is selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower alkoxyalkyl, lower cycloalkyl, lower aryl, lower aralkyl, lower alkaryl, lower alkaralkyl, lower alkoxyaralkyl, and lower haloaralkyl and the pharmacologically acceptable acid addition salts thereof; and
    • b. from about 0.1% to about 99%, optionally from about 5% to about 50%, and optionally from about 10% to about 40%, optionally from about 15% to about 30%, by weight of the composition of an admixture, comprising:
      • i. from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the admixture of an alpha-keto acid;
      • ii. from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the admixture of an antioxidant; and
      • iii. from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, optionally from about 2.0% to about 33.3%, and optionally from about 2.0% to about 7.0%, by weight of the admixture of a fatty acid mixture or fatty acid mixture source comprising at least 7, optionally at least 14, and optionally at least 22, unsaturated or saturated fatty acids selected from the group consisting of, but not limited to, butyric acid, caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, gadoleic acid, pentadecanoic acid, margaric acid, margaroleic acid, behenic acid, dihomolinoleic acid, arachidonic acid and lignoceric acid.

In a further embodiment, the present disclosure relates to hair growth and/or regrowth compositions comprising;

    • a. at least one compound selected from the group consisting of compounds represented by the formulae:

      • and mixtures thereof,
      • wherein R1 is a moiety selected from the group consisting of moieties of the formula —N(R3)(R4), wherein R3 and R4 are selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower aralkyl, and lower cycloalkyl, and taken together R3 and R4 may be a heterocyclic moiety selected from the group consisting of aziridinyl, azetidinyl, pyrrolidinyl, piperidino, hexahydroazepinyl, heptamethylenimino, octamethylenimino, morpholino, and 4-lower-alkylpiperazinyl, each of said heterocyclic moieties having attached as substituents on the carbon atoms 0 to 3 lower alkyl groups, hydroxy or alkoxy; and wherein R2 is selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower alkoxyalkyl, lower cycloalkyl, lower aryl, lower aralkyl, lower alkaryl, lower alkaralkyl, lower alkoxyaralkyl, and lower haloaralkyl and the pharmacologically acceptable acid addition salts thereof; and
    • b. from about 0.1% to about 99%, optionally from about 5% to about 50%, and optionally from about 10% to about 40%, optionally from about 15% to about 30%, by weight of the composition of an admixture, comprising:
      • i) from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33% by weight of the admixture of an acid selected from the group consisting of pyruvic acid, a salt thereof and mixtures thereof:
      • ii) from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the admixture of a tocopherol or an ester thereof; and
      • iii) from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the admixture of a fatty acid mixture source, the fatty acid mixture source being an oil mixture comprising:
        • i) from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the fatty acid mixture of olive oil;
        • ii) from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the fatty acid mixture of cocoa butter; and
        • iii) from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the fatty acid mixture of cottonseed oil.

In a still further embodiment, the present disclosure relates to hair growth and/or regrowth compositions comprising;

    • a. at least one compound selected from the group consisting of compounds represented by the formulae:

      • and mixtures thereof,
      • wherein R1 is a moiety selected from the group consisting of moieties of the formula —N(R3)(R4), wherein R3 and R4 are selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower aralkyl, and lower cycloalkyl, and taken together R3 and R4 may be a heterocyclic moiety selected from the group consisting of aziridinyl, azetidinyl, pyrrolidinyl, piperidino, hexahydroazepinyl, heptamethylenimino, octamethylenimino, morpholino, and 4-lower-alkylpiperazinyl, each of said heterocyclic moieties having attached as substituents on the carbon atoms 0 to 3 lower alkyl groups, hydroxy or alkoxy; and wherein R2 is selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower alkoxyalkyl, lower cycloalkyl, lower aryl, lower aralkyl, lower alkaryl, lower alkaralkyl, lower alkoxyaralkyl, and lower haloaralkyl and the pharmacologically acceptable acid addition salts thereof; and
    • b. from about 0.1% to about 99%, optionally from about 5% to about 50%, and optionally from about 10% to about 40%, optionally from about 15% to about 30%, by weight of the composition of an admixture, comprising:
      • i. from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the admixture of an acid selected from the group consisting of pyruvic acid, a salt thereof and mixtures thereof;
      • ii. from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the admixture of an antioxidant; and
      • iii. from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the admixture of a fatty acid mixture or fatty acid mixture source,
    • wherein the ratio of the pyruvic acid component to the fatty acid mixture is from 0.01:1 (or about 0.01:1) to 1:0.01 (about 1:0.01); the ratio of the pyruvic acid component to the antioxidant component is from 0.01:1 (or about 0.01:1) to 1:0.01 (or about 1:1.01); and the ratio of the fatty acid mixture component to the antioxidant component is from 0.01:1 (or about 0.01:1) to 1:0.01 (or about 1:0.01), or, optionally, wherein the ratio of the pyruvic acid component or the fatty acid mixture component to the antioxidant component is from 1:1 (or about 1:1) to 1:0.01 (or about 1:0.01).

In one other embodiment the present invention relates to a composition comprising:

    • a. from about 0.1% to about 20%, by weight of the composition, of at least one compound selected from the group consisting of compounds represented by the formulae:

      • and mixtures thereof,
      • wherein R1 is a moiety selected from the group consisting of moieties of the formula —N(R3)(R4), wherein R3 and R4 are selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower aralkyl, and lower cycloalkyl, and taken together R3 and R4 may be a heterocyclic moiety selected from the group consisting of aziridinyl, azetidinyl, pyrrolidinyl, piperidino, hexahydroazepinyl, heptamethylenimino, octamethylenimino, morpholino, and 4-lower-alkylpiperazinyl, each of said heterocyclic moieties having attached as substituents on the carbon atoms 0 to 3 lower alkyl groups, hydroxy or alkoxy; and wherein R2 is selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower alkoxyalkyl, lower cycloalkyl, lower aryl, lower aralkyl, lower alkaryl, lower alkaralkyl, lower alkoxyaralkyl, and lower haloaralkyl and the pharmacologically acceptable acid addition salts thereof; and
    • b. from 5% (or about 5%) to 10% (or about 10%), optionally from 6% (or about 6%) to about 8% (or about 8%), by weight of the composition of an acid;
    • c. from 5% (or about 5%) to 10% (or about 10%), optionally from 6% (or about 6%) to about 8% (or about 8%), by weight of the composition of a antioxidant; and
    • d. from 5% (or about 5%) to 10% (or about 10%), optionally from 6% (or about 6%) to about 8% (or about 8%), by weight of the composition of a fatty acid mixture or fatty acid mixture source, the fatty acid mixture or fatty acid mixture source being an oil mixture comprising:
      • i) from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the fatty acid mixture of a first oil;
      • ii) from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the fatty acid mixture of a second oil; and
      • iii) from 0.01% to 99.98%, or optionally 10% to 90%, or optionally from 20% to 70%, or optionally from 25% to 50% or optionally from 30% to 40%, or optionally about 33%, by weight of the fatty acid mixture of a third oil.

The present disclosure finds application in all mammalian species, including both humans and animals. In humans, the compositions of the present invention can be applied for example, to the head, pubic area, upper lip, eyebrows, and eyelids. In animals raised for their pelts, e.g. mink, the compositions can be applied over the entire surface of the body to improve the overall pelt for commercial reasons. The methods can also be used for cosmetic reasons in animals, e.g. applied to the skin of dogs and cats having bald patches due to mange or other diseases.

Other aspects of the present invention will become readily apparent by those skilled in the art from the following detailed description, wherein it is shown and described only in the preferred embodiments, simply by way of illustration of the best mode. As will be realized, the disclosure is capable of other and different embodiments, and its several details are capable of modifications in various obvious respects, without departing from the spirit of the disclosure. Accordingly, the description is to be regarded as illustrative in nature and not as restricted.

DETAILED DESCRIPTION OF THE INVENTION

The compositions of the present invention can comprise, consist of, or consist essentially of the essential elements and limitations of the invention described herein, as well any of the additional or optional ingredients, components, or limitations described herein.

The term “comprising” (and its grammatical variations) as used herein is used in the inclusive sense of “having” or “including” and not in the exclusive sense of “consisting only of.” The terms “a” and “the” as used herein are understood to encompass the plural as well as the singular.

All documents incorporated herein by reference in their entirety are only incorporated herein to the extent that they are not inconsistent with this specification.

All percentages, parts and ratios are based upon the total weight of the composition of the present invention, unless otherwise specified. All such weights as they pertain to the listed ingredients are based on the active level and, therefore, do not include carriers or by-products that may be included in commercially available materials, unless otherwise specified.

The term “safe and effective amount” as used herein means an amount of a compound or composition such as a topical or system active sufficient to significantly induce a positive benefit, for example, hair growth or regrowth, but low enough to avoid serious side effects, i.e., to provide a reasonable benefit to risk ratio, within the scope of sound judgment of the skilled artisan.

The Pyrimidine Compound

The compositions of the present invention contain at least one compound represented by the formulae:

    • R1 is a moiety selected from the group consisting of moieties of the formula —N(R3)(R4).

Each R3 and R4 individually is selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower aralkyl, and lower cycloalkyl, and taken together R3 and R4 may be a heterocyclic moiety selected from the group consisting of aziridinyl, azetidinyl, pyrrolidinyl, piperidino, hexahydroazepinyl, heptamethylenimino, octamethylenimino, morpholino, and 4-lower-alkylpiperazinyl, each of said heterocyclic moieties having attached as substituents on the carbon atoms 0 to 3 lower alkyl groups, hydroxy or alkoxy, and wherein R2 is selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower alkoxyalkyl, lower cycloalkyl, lower aryl, lower aralkyl, lower alkaryl, lower alkaralkyl, lower alkoxyaralkyl, and lower haloaralkyl and the pharmacologically acceptable acid addition salts thereof.

The amount of the compound of the above Formulas I and/or II is a safe and effective amount for promoting hair growth and/or regrowth. In certain embodiments, the compound of Formulas I and/or II is present at a concentration of from 0.1% (or about 0.1%) to 20% (or about 20.0%) of the preparation, or optionally, from about 0.5% to about 10% by weight of the composition.

Listed below are definitions of various terms used to describe this invention. These definitions apply to the terms as they are used throughout this specification, unless otherwise limited in specific instances, either individually or as part of a larger group.

The term “lower alkyl” refers to straight or branched chain hydrocarbon groups containing typically 1 to 6 carbon atoms, and more typically 1 to 3 carbon atoms.

Examples of suitable lower alkyl groups include methyl, ethyl and propyl. Examples of branched alkyl groups include isopropyl and t-butyl. Examples of suitable alkoxy groups are methoxy, ethoxy and propoxy.

The “lower cycloalkyl” groups typically contain 3-6 carbon atoms and include cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl.

The “lower alkenyl” groups typically contain 2-6 carbon atoms and include ethenyl, propenyl and butenyl.

The “lower cycloalkenyl” groups typically contain 3-6 carbon atoms and include cyclopropenyl, cyclobutenyl, cyclopentenyl and cyclohexenyl.

The term “lower aryl” refers to monocyclic or multi-ring aromatic hydrocarbon groups typically containing 6 to 14 carbon atoms in the ring portion, such as phenyl, 2-naphthyl, 1-naphthyl, 4-biphenyl, 3-biphenyl, 2-biphenyl, and diphenyl groups.

Examples of halo groups are Cl, F, Br and I.

The compounds of Formulas I and/or II may also be dissolved in conventional organic solvents such as dimethylsulfoxide (DMSO), acetonitrile, dimethylformamide (DMF), dimethylacetamide (DMA), propylene glycol/ethanol/water and mixtures thereof.

The compositions can also be dissolved in or contain as auxiliary components such as acid (e.g., lactic acid) or alcoholic solubilizers. For instance, compositions of the present disclosure can optionally include an acid solubilizer for the compounds of Formulas I and/or II as disclosed in U.S. Pat. No. 5,652,274, herein incorporated by reference in its entirety. In other embodiments, suitable solubilizers include propylene glycol and alcohol. The solubilizer, when present can be employed in amounts of from about 1% to about 60%, or, optionally, from about 20% to about 50%.

When used, the lactic acid or lactate may be selected from the group consisting of lactic acid, salts of lactic acid, prodrugs of lactic acid, and mixtures thereof. The salts of lactic acid may include, but is not limited to, alkali salts and alkaline earth salts. In certain embodiments, the lactate is selected from the group consisting of lactic acid, lithium lactate, sodium lactate, potassium lactate, magnesium lactate, calcium lactate, zinc lactate, manganese lactate, and the like, and mixtures thereof. In other embodiments, the lactate is selected from the group consisting of lactic acid, sodium lactate, potassium lactate, magnesium lactate, calcium lactate, zinc lactate, manganese lactate, and mixtures thereof. In still further embodiments, the lactate is lactic acid.

When present in the compositions of the present invention, the lactate is present in an amount suitable for dissolving the compound of Formula I or Formula II. In certain embodiments, lactate is present in the composition in an amount from about 0.05% to about 50%, optionally, from about 1.0% to about 45%, or, optionally, from about 1.0% to about 5.0%, by weight of the composition.

The Admixture

The compositions of the present invention further include an admixture comprising: 1) an acid selected from the group consisting of intermediates of the Kreb cycle, non-Kreb cycle intermediate alpha keto acid, derivatives thereof and mixtures thereof; and/or an antioxidant and 2) a mixture of saturated and unsaturated fatty acids.

In certain embodiments, the admixture is present in the composition at a concentration of from 0.1% (or about 0.1%) to 99% (or about 99%), optionally from 3% (or about 3%) to 75% (or about 75%), optionally from 5% (or about 5%) to 50% (or about 50%), optionally from 10% (or about 10%) to 40% (or about 40%), optionally from 15% (or about 15%) to 30% (or about 30%), or optionally from 19% (or about 19%) to 23% (or about 23%), by weight of the composition.

The Acid

In certain embodiments, the acid of the admixture of the present invention is selected from the group consisting of intermediates of the Kreb cycle, non-Kreb cycle alpha keto acids, derivatives thereof and mixtures thereof.

Kreb cycle (or Citric acid cycle) intermediates useful herein, include, but are not limited to, 2-oxoglutarate, fumarate, succinate, oxaloacetate, citrate, cis-aconitate, isocitrate, oxalosuccinate, alpha-ketoglutarate, L-malate, esters thereof, ethers thereof or salts thereof and mixtures thereof.

In other embodiments, the acid is a non-Kreb cycle intermediate alpha-keto acid (or 2-oxoacid). The alpha-keto acid (or 2-oxoacid) has the keto group adjacent to the carboxylic acid. By “non-Kreb cycle intermediate”, as used herein, means a chemical, compound or intermediate not produced by the Kreb cycle or Citric Acid cycle. In certain embodiments, suitable non-Kreb cycle alpha-keto acids include, but are not limited to, pyruvic acid (alpha-ketopropionic acid), alpha-ketoisovaleric acid, alpha-ketoisocaproic acid, salts thereof and mixtures thereof. It should be understood, however, that in addition to these alpha-keto acids, the unqualified term “alpha-keto acids” further includes, but is not limited to, alpha ketoglutaric acid.

In certain embodiments the alpha-keto acid useful as the acid is a pyruvic acid. Pyruvic acid suitable for use in the present invention may be selected from the group consisting of pyruvic acid, salts of pyruvic acid, prodrugs of pyruvic acid, and mixtures thereof. In certain embodiments, the salts of pyruvic acid may be alkali salts and alkaline earth salts. In certain embodiments, the pyruvic acid is selected from the group consisting of pyruvic acid, lithium pyruvate, sodium pyruvate, potassium pyruvate, magnesium pyruvate, calcium pyruvate, zinc pyruvate, manganese pyruvate, methyl pyruvate, and mixtures thereof.

In other embodiments, the pyruvic acid is selected from the group of salts consisting of sodium pyruvate, potassium pyruvate, magnesium pyruvate, calcium pyruvate, zinc pyruvate, manganese pyruvate, and the like, and mixtures thereof. In still other embodiments, the pyruvic acid is sodium pyruvate.

Without being limited by theory, it is believed that the acid acts as the energy source component for the admixture. In certain embodiments, the acid is present in the composition in an amount of from 0.01% (or about 0.01%) to 99.98% (or about 99.98%), or optionally 10% (or about 10%) to 90% (or about 90%), or optionally from 20% (or about 20%) to 70% (or about 70%), or optionally from 25% (or about 25%) to 50% (or about 50%), or optionally from 30% (or about 30%) to 40% (or about 40%), or optionally about 33%, by weight of the admixture.

Antioxidant

Antioxidants, as mentioned above, are also present as a component of the admixture of the present invention. Generally, antioxidants are substances which inhibit oxidation or suppress reactions promoted by oxygen or peroxides. Without being limited by theory, it is believed that antioxidants, or, optionally, lipid-soluble antioxidants, can be absorbed into the cellular membrane to neutralize oxygen radicals and thereby protect the hair follicles from oxidative damage. In certain embodiments, the antioxidant may be selected from the group consisting of all forms of Vitamin A including lycopene, lutein, retinal and 3,4-didehydroretinal, all forms of carotene such as alpha-carotene, beta-carotene (beta, beta-carotene), gamma-carotene, delta-carotene, all forms of Vitamin C (D-ascorbic acid, L-aseorbic acid), all forms of tocopherol such as Vitamin E (alpha-tocopherol, 3,4-dihydro-2,5,7,8-tetramethyl-2-(4,8,12-trimethyltri-decyl)-2H-1-benzopy ran-6-ol), beta-tocopherol, gamma-tocopherol, delta-tocopherol, tocoquinone, tocotrienol, and Vitamin E esters which readily undergo hydrolysis to Vitamin E such as Vitamin E acetate and Vitamin E succinate, and Vitamin E salts such as Vitamin E phosphate, prodrugs of Vitamin A, carotene, Vitamin C, and Vitamin E, salts of Vitamin A, carotene, Vitamin C, and Vitamin E, and the like, flavonoids and mixtures thereof. Flavonoids useful in the present can be found in U.S. Pat. No. 6,051,602 to Bissett, herein incorporated by reference. In other embodiments, the antioxidant is selected from the group of lipid-soluble antioxidants consisting of Vitamin A, beta-carotene, tocopherol, and mixtures thereof. In still other embodiments, the antioxidant is tocopherol Vitamin E or Vitamin E acetate. In yet other embodiments, the antioxidant is a polyphenol such as resveratrol or epigallocatechin gallate.

In certain embodiments, the antioxidant component is present in the composition in an amount of from 0.01% (or about 0.01%) to 99.98% (or about 99.98%), or optionally 10% (or about 10%) to 90% (or about 90%), or optionally from 20% (or about 20%) to 70% (or about 70%), or optionally from 25% (or about 25%) to 50% (or about 50%), or optionally from 30% (or about 30%) to 40% (or about 40%), or optionally about 33%, by weight of the admixture.

In certain embodiments, the ratio of the acid component to the antioxidant component on a weight/weight basis is from 0.01:1 (or about 0.01:1) to 1:0.01 (or about 1:0.01), optionally from 1:1 (or about 1:1) to 1:0.1 (or about 1:0.1), optionally from 1:1 (or about 1:1) to 1:0.5 (or about 1:0.5).

The Fatty Acid Mixture or Fatty Acid Mixture Source

The admixture of the present invention also contains a mixture of saturated and unsaturated fatty acids, free or bound, or a source of such saturated and unsaturated fatty acids useful in providing a readily available source of nutrients to hair follicles

Suitable mixtures of saturated and unsaturated fatty acids may be derived from animal and vegetable fats and waxes, mammalian or fish egg materials, prodrugs of saturated and unsaturated fatty acids useful in the present compositions, and mixtures thereof. The fatty acids in the fatty acid mixture may be in the form of mono-, di-, or trigylcerides, or free fatty acids, or mixtures thereof.

In one embodiment, the fatty acid mixture of saturated and unsaturated fatty acids has a composition similar to that of human fat and comprises the following fatty acids: butyric acid, caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, dihomolinoleic acid, arachidonic acid, behenic acid, lignoceric acid and gadoleic acid. Typically, butyric acid, caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, and gadoleic acid are present in the mixture in about the following percentages by weight, respectively: about 0.2%-0.4% butyric acid, about 0.1% caproic acid, about 0.3%-0.8% caprylic acid, about 2.2%-3.5% capric acid, about 0.9%-5.5% lauric acid, about 2.8%-8.5% myristic acid, about 0.1%-0.6% myristoleic acid, about 23.2%-24.6% palmitic acid, about 1.8%-3.0% palmitoleic acid, about 6.9%-9.9% stearic acid, about 36.0%-36.5% oleic acid, about 20%-20.6% linoleic acid, about 7.5-7.8% linolenic acid, about 1.1%-4.9% arachidic acid, about 2%-3% dihomolinoleic acid, about 7%-9% arachidonic acid, about 3%-4% behenic acid, about 11%-13% lignoceric acid and about 3.3%-6.4% gadoleic acid.

In another embodiment, the fatty acid mixture of saturated and unsaturated fatty acids has a composition similar to chicken fat and comprising the following fatty acids: lauric acid, myristic acid, myristoleic acid, pentadecanoic acid, palmitic acid, palmitoleic acid, margaric acid, margaroleic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, and gadoleic acid. Optionally, lauric acid, myristic acid, myristoleic acid, pentadecanoic acid, palmitic acid, palmitoleic acid, margaric acid, margaroleic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, and gadoleic acid are present in the mixture in about the following percentages by weight, respectively: about 0.1% lauric acid, about 0.8% myristic acid, about 0.2% myristoleic acid, about 0.1% pentadecanoic acid, about 25.3% palmitic acid, about 7.2% palmitoleic acid, about 0.1% magaric acid, about 0.1% heptadecenoic acid, about 6.5% stearic acid, about 37.7% oleic acid, about 20.6% linoleic acid, about 0.8% linolenic acid, about 0.2% arachidic acid, and about 0.3% gadoleic acid.

In certain other embodiments, the fatty acid mixture of saturated and unsaturated fatty acids has a composition similar to lecithin. Lecithin (phosphatidylcholine) is a phosphatide found in all living organisms (plants and animals) and is a significant constituent of nervous tissue and brain substance. Lecithin is a mixture of the diglycerides of stearic acid, palmitic acid, and oleic acid, linked to the choline ester of phosphoric acid. The product of commerce is predominantly soybean lecithin obtained as a by-product in the manufacturing of soybean oil. Soybean lecithin contains by weight palmitic acid 11.7%, stearic acid 4.0%, palmitoleic acid 8.6%, oleic acid 9.8%, linoleic acid 55.0%, linolenic acid 4.0%, C20 to C22 acids (includes arachidonic acid) 5.5%. Lecithin may be represented by the formula: C8H17O5NR9R10 wherein each of R9 and R10 are, independently, selected from the group consisting of stearic acid, palmitic acid, and oleic acid.

In certain other embodiments, the fatty acid mixture of saturated and unsaturated fatty acids has a composition similar to egg yolk. The composition (by weight) of the most prevalent fatty acid mixture in egg yolk can be broken into by weight:

    • A. unsaturated fatty acids such as oleic acid (about 47%), linoleic acid (about 16%), palmitoleic acid (about 5%), and linolenic acid (about 2%); and
    • B. saturated fatty acids: such as palmitic acid (about 23%), stearic acid (about 4%), and myristic acid (about 1%).
      Egg yolk is also a source of lecithin.

The above fatty acid mixtures (or fatty acid mixture sources) and percentages of fatty acids present in the various fatty acid mixture (or sources thereof) are provided as examples. The exact type of fatty acid present in the fatty acid mixture (or mixture sources) and the exact amount of fatty acid employed in the fatty acid mixture (or mixture sources) may be varied in order to obtain the result desired in the final product and such variations are now within the capabilities of those skilled in the art without the need for undue experimentation.

In certain embodiments of the present invention, the fatty acid mixture or fatty acid mixture source comprising at least 7, optionally at least 14, and optionally at least 22, unsaturated or saturated fatty acids selected from the group consisting of, but not limited to, butyric acid, caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, gadoleic acid, pentadecanoic acid, margaric acid, margaroleic acid, behenic acid, dihomolinoleic acid, arachidonic acid and lignoceric acid. Other useful fatty acids can be found in U.S. Pat. No. 4,874,794 to Adachi et al., herein incorporated by reference.

In certain embodiments, the fatty acid mixture in the admixture is obtained or sourced from oil mixtures. For example, cottonseed oil has a 2:1 ratio of polyunsaturated to saturated fatty acids. Its fatty acid profile generally consists of 70% unsaturated fatty acids including 18% monounsaturated (oleic), 52% polyunsaturated (linoleic) and 26% saturated (primarily palmitic and stearic). More specifically, cottonseed oil has fatty acids present in the mixture in about the following percentages by weight, respectively: about 0.5-2.0% myristic acid, about 17.0-29.0% palmitic acid, less than about 1.5% palmitoleic acid, about 1.0-4.0% stearic acid, about 13.0-44.0% oleic acid, about 40.0-63.0% linoleic acid, and about 0.1-2.1% linolenic acid.

Cocoa butter has fatty acids present in the mixture in about the following percentages by weight, respectively: at least about 0.1% myristic acid, about 0.5-26.3% palmitic acid, at least about 0.4% palmitoleic acid, about 0.5-33.8% stearic acid, about 0.5-34.4% oleic acid, and about 0.5-3.1% linoleic acid.

Olive oil was determined in one study to have fatty acids present in the mixture in about the following percentages by weight, respectively: about 0.5-9.0% palmitic acid, at least about 0.4% palmitoleic acid, about 0.5-2.7% of stearic acid, about 0.5-80.3% oleic acid, about 0.5-6.3% of linoleic acid, and about 0.5-0.7% linolenic acid.

Oils suitable for use as a fatty acid mixture source include, but are not limited to, Adansonla digitata oil; apricot (Prunus armeniaca) kernel oil; Argania spinosa oil; Argemone mexicana oil; avocado (Persea gratissima) oil; babassu (Orbignya olelfera) oil; balm mint (Melissa officinalis) seed oil; bitter almond (Prunus amygdalus amara) oil; bitter cherry (Prunus cerasus) oil; black currant (Ribes nigrum) oil; borage (Borago officinalis) seed oil; brazil (Bertholletia excelsa) nut oil; burdock (Arctium lappa) seed oil; butter; calophyllum tacamahaca oil; camellia kissi oil; camellia oleifera seed oil; canola oil; caraway (Carum carvi) seed oil; carrot (Daucus carota sativa) oil; cashew (Anacardium occidentale) nut oil; castor oil benzoate; castor (Ricinus communis) oil; cephalins; chaulmoogra (Taraktogenos kurzii) oil, chia (Salvia hispanica) oil; cocoa (Theobrama cocao) butter; coconut (Cocos nucifera) oil; cod liver oil; coffee (Coffea arabica) oil; corn (Zea mays) germ oil; corn (Zea mays) oil; cottonseed (Gossypium) oil; cucumber (Cucumis sativus) oil; dog rose (Rosa canina) hips oil; egg oil; emu oil; epoxidized soybean oil; evening primrose (Oenothera biennis) oil; fish liver oil; gevuina avellana oil; goat butter; grape (Vitis vinifera) seed oil; hazel (Croylus americana) nut oil; hazel (Corylus aveilana) nut oil; human placental lipids; hybrid safflower (Carthamus tinctorius) oil; hybrid sunflower (Helianthus annuus) seed oil; isatis tinctoria oil; job's tears (Coix lacryma-jobi) oil; jojoba oil; kiwi (Actinidia chinensis) seed oil; kukui (Aleurites moluccana) nut oil; lard; linseed (Linum usitatissiumum) oil; lupin (Lupinus albus) oil; macadamia nut oil; macadamia ternifolia seed oil; macadamia integrifolia seed oil; maleated soybean oil; mango (Mangifera indica) seed oil; marmot oil; meadowfoam (Limnanthes fragraalba) seed oil; menhaden oil; milk lipids; mink oil; moring a pterygosperma oil; mortierella oil; musk rose (Rosa moschata) seed oil; neatsfoot oil; neem (Melia azadirachta) seed oil; oat (Avena sativa) kernel oil; olive (Olea europaea) husk oil; olive (Olea europaea) oil; omental lipids; orange roughy oil; ostrich oil; oxidized corn oil; palm (Elaeis guineensis) kernel oil; palm (Elaeis guineensis) oil; passionflower (Passiflora edulis) oil; peach (Prunus persica) kernel oil; peanut (Arachis hypogaea) oil; pecan (Caiya illinoensis) oil; pengawar djambi (Cibotium barometz) oil; pistachio (Pistacia vera) nut oil; placental lipids; poppy (Papaver orientale) oil; pumpkin (Cucurbita pepo) seed oil; quinoa (Chenopodium quinoa) oil; rapeseed (Brassica campestris) oil; rice (Oryza sativa) bran oil; rice (Oryza sativa) germ oil; safflower (Carthamus tinctorius) oil; salmon oil; sandalwood (Santalum album) seed oil; seabuchthorn (Hippophae rhamnoides) oil; sesame (Sesamum indicum) oil; shark liver oil; shea butter (Butyrospermum parkii); silk worm lipids; skin lipids; soybean (Glycine soja) oil; soybean lipid; Sphingolipids; sunflower (Helianthus annuus) seed oil; sweet almond (Prunus amygdalus dulcis) oil; sweet cherry (Prunus avium) pit oil; tali oil; tallow; tea tree (Melaleuca alternifolia) oil; telphairia pedata oil; tomato (Solanum lycopersicum) oil; trichodesma zeylanicum oil; tuna oil; vegetable oil; walnut (Juglans regia) oil; wheat bran lipids; and wheat (Triticum vulgare) germ oil and mixtures thereof.

In certain embodiments, the oil is present in the compositions of the present invention in a total amount of from 0.01% (or about 0.01%) to 99.98% (or about 99.98%), or optionally 10% (or about 10%) to 90% (or about 90%), or optionally from 20% (or about 20%) to 70% (or about 70%), or optionally from 25% (or about 25%) to 50% (or about 50%), or optionally from 30% (or about 30%) to 40% (or about 40%), or optionally about 33%, by weight of the fatty acid mixture.

In certain embodiments the oil mixture used as a source of the fatty acid mixture is formed from oils selected to provide the following fatty acid composition: 0.3% (or about 0.3%) myristic acid, 19% (or about 19%) palmitic acid, 0.5% (or about 0.5%) palmitoleic acid, 13% (or about 13%) stearic acid, 44.4% (or about 44.4%) oleic acid, 21.3% (or about 21.3%) linoleic acid, and 0.5% (or about 0.5%) linolenic acid. In certain embodiments the oil mixture used as a source of the fatty acid mixture is formed from oils selected from the group consisting of cocoa butter, olive oil, cottonseed oil and mixtures thereof.

In certain embodiments, the fatty acid mixture or source of the fatty acid mixture is present in the compositions of the present invention in an amount from 0.01% (or about 0.01%) to 99.98% (or about 99.98%), or optionally 10% (or about 10%) to 90% (or about 90%), or optionally from 20% (or about 20%) to 70% (or about 70%), or optionally from 25% (or about 25%) to 50% (or about 50%), or optionally from 30% (or about 30%) to 40% (or about 40%), or optionally 33%, by weight of the admixture.

In certain embodiments, the ratio of the acid component to the fatty acid mixture component on a weight/weight basis is from 0.01:1 (or about 0.01:1) to 1:0.01 (or about 1:0.01), optionally from 1:1 (or about 1:1) to 1:0.1 (or about 1:0.1), optionally from 1:1 (or about 1:1) to 1:0.5 (or about 1:0.5), or optionally, 1:1 (or about 1:1).

In certain embodiments, the ratio of the fatty acid mixture component to the antioxidant component on a weight/weight basis is from 0.01:1 (or about 0.01:1) to 1:0.01 (or about 1:0.01), optionally from 1:1 (or about 1:1) to 1:0.1 (or about 1:0.1), optionally from 1:1 (or about 1:1) to 1:0.5 (or about 1:0.5).

In certain embodiments, the ratio of the pyruvic acid component or the fatty acid mixture component to the antioxidant component on a weight/weight basis is from 1:1 (or about 1:1) to 1:0.01 (or about 1:0.01).

Without being limited by theory, the present inventors believe that the compositions and methods of the present invention provide improved hair growth or regrowth; provide a thicker or richer hair coat; and/or treat or prevent hair loss by accelerating the onset of the anagen phase of hair growth in mammals and/or increase the rate at which terminal hair appears on the skin of mammals.

Hair studies have concluded that the histological features of the human hair follicle vary extensively during the growth cycle. Hair can be classified as either: 1. terminal hairs which are darkly pigmented, long and thick or 2. vellus hair which very fine and light colored hair. In balding men thick terminal hair is often replaced by fine vellus-like hair.

All hair, terminal and vellus, goes through a growth phase (anagen), a regression or transitional phase (catagen), and a resting phase (telogen).

During the anagen phase, the growth cells in the dermal papilla rapidly divide and produce the hair shaft which becomes keratinized as it pushes up and out of the follicle into the pore. The anagen hair bulbs are located in the deeper subcutaneous fat levels of the skin. The catagen bulbs are in the dermis and telogen bulbs are in the mid-to-upper dermis. The anagen phase for vellus hairs is typically much shorter than that for terminal hairs.

Optional Cosmetically Acceptable Active Agents

In one embodiment, the compositions according to this invention may further contain one or more additional cosmetically active agent(s) as well as the above-mentioned components. What is meant by a “cosmetically acceptable active agent” is a compound, which may be a synthetic compound or a compound isolated, purified or concentrated from a natural source, or a natural extract containing a mixture of compounds, that has a cosmetic effect on the tissue, including, but not limited to: anti-aging agents, sunscreens, photoprotectors, antioxidants, keratolytic agents, detergents/surfactants, moisturizers, nutrients, vitamins, minerals, energy enhancers, anti-perspiration agents, astringents, hair growth enhancing agents, hair coloring agents, pigments, firming agents, agents for skin conditioning, and odor-control agents such as odor masking or pH-changing and buffering agents.

In certain embodiments, the additional cosmetically acceptable active is a hair growth active selected from a group of compounds known to promote hair growth and available as drugs, such as diazoxide, pinacidil, bimatoprost, finasteride, a type 2 5-alpha-reductase inhibitor, and dutasteride, a type 1- and 2- 5-alpha-reductase inhibitor, as well as flutamide, bicalutamide, pregnane derivatives, progesterone derivatives, experimental agents such as FCE 28260 and the like. Spironolactone and other diuretics may also be utilized as it is indicated for women in some cases (also known as aldactone: an aldosterone receptor antagonist).

In other embodiments of the compositions of the present invention, synthetic or natural 5-alpha-reductase inhibitors, or other anti-sebum ingredients including, but not limited to, sepicontrol (capryloyl glycine, sarcosine and cinamomum zeylanicum Bark Extract), licorice powder or extract, and the like may be incorporated. MC5 receptor antagonists may also be utilized in the compositions of this invention. Examples of MC5-R antagonists may be found in U.S. Pat. No. 7,049,331, herein incorporated by reference in its entirety.

Also useful in certain embodiments are herbal remedies that may have 5-alpha-reductase inhibitory action or otherwise induce hair growth may include: saw palmetto and Pygeum africanum. Other agents that may have such activity are beta-sisterol, sepicontrol and licorice, gamma-linolenic acid and other unsaturated fatty acids, zinc and zinc salts, Cotinus coggygria extract, green tea catechin (−)-epigallocatechin gallate (EGCG) and other polyphenols, and the like. Grape seed, apple seed, apple juice, and barley extracts may also be potential agents that may induce hair growth, although they are not thought to be very common or satisfactory in achieving satisfactory results.

Topical Carriers

The topical compositions useful in this invention contain formulations suitable for topical application to skin and scalp. The term “topical” as employed herein relates to the use of a composition along with a suitable pharmaceutical carrier, and applied according to the method of the present invention at the site of hair loss, reduced hair growth or baldness for exertion of local action. Accordingly, such topical compositions useful in the methods of the present invention include those pharmaceutical forms in which the compound is applied externally by direct contact with the skin surface to be treated.

In one embodiment, the compositions contain the above components in a cosmetically-acceptable topical carrier. Suitable carrier forms include ointments, pastes, gels, jellies, serums, aerosol and non-aerosol sprays, foams, creams, lotions, solutions, suspensions and the like. The term “ointment” embraces formulations (including creams) having oleaginous, absorption, water-soluble and emulsion-type bases, e.g., petrolatum, lanolin, polyethylene glycols, as well as mixtures of these. A more detailed discussion of the specific carriers and additional components useful in the compositions of the present invention can be found in U.S. Patent Publication 2008/0145331 to Bruning et al., herein incorporated by reference in its entirety. In one embodiment, the cosmetically-acceptable topical carrier constitutes from about 50% to about 99.99%, by weight, of the composition or optionally from about 80% to about 95%, by weight, of the composition.

Other Materials

Various other materials may also be present in the compositions useful in the subject invention. These include humectants, proteins and polypeptides, preservatives, an alkaline agent and mixtures thereof. The compositions of the present invention may also comprise chelating agents (e.g., EDTA) and preservatives (e.g., parabens). In addition, the topical compositions useful herein can contain conventional cosmetic adjuvants, such as dyes, sunscreen (e.g., titanium dioxide), pigments, and fragrances. A more detailed discussion of these and other materials can be found in previously incorporated U.S. Patent Publication 2008/0145331 to Bruning et al. as well as in U.S. Pat. No. 5,658,956 to Martin et al., which patent is herein incorporated by reference in its entirety.

Mixtures of the above preservatives can also be used.

Methods of Use

The use of compositions of this invention for accelerating the onset of the anagen phase of hair growth in a mammal and/or increasing the rate at which terminal hair appears on the skin by topical application of the present compositions was determined by the mice studies described below.

In certain embodiments, the compositions of this invention should be applied topically to the desired area of the mammalian or human body at least once per day for at least 11 weeks, optionally at least 9 weeks, or optionally at least 7 weeks. The hair growth benefits of the present invention may be maintained indefinitely by chronic administration of the compositions of the present invention.

EXAMPLES

The compositions of the present invention as described in following examples illustrate specific embodiments of compositions of the present invention, but are not intended to be limiting thereof. Other modifications can be undertaken by the skilled artisan without departing from the spirit and scope of this invention.

Determination of Accelerated Onset of Anagen Phase

To determine the acceleration in the onset of the anagen phase in the C3H mice, the following treatment formulations were prepared using conventional mixing technology.

Treatment Treatment Treatment Treatment Treatment Treatment Formulation 1 Formulation 2 Formulation 3 Formulation 4 Formulation 5 Formulation 6 Ingredient Percent (w/w %) Water USP 52.40 58.46 58.40 58.40 57.40 62.94 Lactic Acid NF 3.15 3.15 3.15 3.15 3.15 3.15 Methylparaben NF 0.20 0.20 0.20 0.20 0.20 0.20 Minoxidil USP 5.00 5.00 5.00 5.00 — 5.00 Sodium Pyruvate 7.00 7.00 1.00 7.00 7.00 3.50 Polyoxyethylene (2) 6.00 6.00 6.00 6.00 6.00 6.00 Stearyl Ether Polyoxyethylene (20) 6.00 6.00 6.00 6.00 6.00 6.00 Stearyl Ether Cetearyl Alcohol (and) 6.00 6.00 6.00 6.00 6.00 6.00 Ceteareth-20 Propylparaben NF 0.20 0.20 0.20 0.20 0.20 0.20 Vitamin E Acetate NF 7.00 7.00 7.00 1.00 7.00 3.50 Cocoa Butter NF 2.35 0.33 2.35 2.35 2.35 1.17 Olive Oil NF 2.35 0.33 2.35 2.35 2.35 1.17 Cottonseed Oil NF 2.35 0.33 2.35 2.35 2.35 1.17 Citric Acid or Sodium — as needed as needed as needed as needed as needed Hydroxide pH 4.5 4.4 4.4 4.5 4.4 4.4

Treatment Formulation 7 (Actavis Minoxidil Topical Solution 5%)1 Ingredients Percent (w/w %) pH Water USP N/A Apparent Propylene Glycol N/A pH = 8.1 Alcohol N/A Minoxidil USP 5.00 1Supplied by Actavis MidAtlantic LLC, Baltimore, MD

C3H female mice at 6-7 weeks of age were purchased from Taconic Farms (Germantown, N.Y.). C3H mice's hair growth cycles have similar anagen, catagen and telogen phases. (Table 1) (Miyamoto I.; Hamada K., Journal of Dermatological Science, Volume 10, Number 1, July 1995, pp. 99-99(1)).

TABLE I Weeks after Birth Week Week Week Week 0 2 3 Week 4 Week 6 Week 7 15 Hair Morpho- Cata- Telo- Anagen Catagen Telogen Anagen Growth genesis gen gen Stage

Each phase is much shorter than corresponding human hair growth cycles and synchronized across all the hair follicles. This makes C3H mice a useful model for studying the induction activity of hair re-growth by active substances. C3H mice have a long telogen window from week 7 to week 15. Therefore, typically hair regrowth studies start at week 7 and ends at week 15, i.e. the duration of a study is about 8 weeks.

Mice were housed in appropriately sized cages in an environmentally controlled room with a 12-hour light-12-hour dark photoperiod and supplied with food and water ad libitum. Animal care was based on the “Guide for the Care and Use of Laboratory Animals”, NIH Publication No. 85-23. Once all mice entered their prolonged telogen/resting phase of the hair cycle, they were clipped over the dorsal area about 1.5×5 cm (Wahl Clippers 8900 Series, Blade #1086). Five female mice per group were clipped while sedated with 2% induction and maintenance isoflurane and 0.5 L Oxygen. The actual number of mice represented in the data may vary due to inadvertent death of one or more mice during study.

The treatment groups and treatment formulations were selected as follows:

Group Treatment Formulation A Test Formulation 1 (The admixture [7:7:7] w/5% minoxidil) B Test Formulation 2 (The admixture [7:7:1] w/5% minoxidil) C Test Formulation 3 The admixture [1:7:7] w/5% minoxidil) D Test Formulation 4 (The admixture [7:1:7] w/5% minoxidil) E Test Formulation 5 (The admixture [7:7:7] w/o minoxidil) F Test Formulation 6 (The admixture [3.5:3.5:3.5] w/5% minoxidil) G Test Formulation 7 (5% minoxidil w/o the admixture) H No Treatment (the brackets “[ ]” indicate the w/w % ratio of the alpha-keto acid component to the antioxidant component to the fatty acid mixture component in the treatment formulation.)

200 mg of each test formulations were applied topically to the test skin area daily, 5 days a week. Images were taken on day 5 of each week of treatment and every 7 days thereafter to determine by visual observation the first signs of anagen/active growth phase and to determine rate at which terminal hairs cover skin treatment area. A study log (or, Anagen Phase Log) was kept to document day-to-day observations of mice entering anagen phase (i.e., to observe the first appearance of grey skin, the first visual clue to new hair growth). Treatments continued for 9 weeks. Surprisingly, the onset of the anagen phase occurred faster in C3H mice groups treated with 5% minoxidil plus admixture of the present invention than with 5% minoxidil alone.

Table II indicates anagen phase onsets for Groups A-H as recorded in the anagen phase log.

TABLE II Anagen Phase Onset (Treat- Group Treatment Formulation ment Day) A Test Formulation 1 15 (The admixture [7:7:7] w/minoxidil) B Test Formulation 2 15 (The admixture [7:7:1] w/minoxidil) C Test Formulation 3 15 (The admixture [1:7:7] w/minoxidil) D Test Formulation 4 11 (The admixture [7:1:7] w/minoxidil) E Test Formulation 5 19 (The admixture [7:7:7] w/o minoxidil) F Test Formulation 6 14 (The admixture [3.5:3.5:3.5] w/5% minoxidil) G Test Formulation 7 24 (5% minoxidil w/o the admixture) H No Treatment 42 (the brackets “[ ]” indicate the w/w % ratio of the alpha-keto acid component to the antioxidant component to the fatty acid mixture component in the treatment formulation.)

The data in Table II demonstrates that the onset of anagen phase occurred in each of the groups containing the admixture as follows:

    • i. 9 days earlier in Groups A, B and C than in Group G and 27 days earlier than in Group H;
    • ii. 13 days earlier in Group D than in Group G and 31 days earlier than in Group H
    • iii. 5 days earlier in Group E than in Group G and 23 days earlier than in Group H.
    • iv. 10 days earlier than in Group F than in Group G and 18 days earlier than in Group H.

The average degree of terminal hair coverage across mice in each Group was determined by visual inspection of the images taken at weeks 0, 4 and 5. The phrase “degree of terminal hair coverage”, means the observed average estimated percentage of the treated site which is covered by terminal hair. The phrase “higher degree of terminal hair coverage” means the average terminal hair coverage associated with one group of mice is: a. thicker or darker in color on average; and/or b. covers a larger average observed estimated percentage of the treated site than is observed in another group. The phrase “low degree of terminal hair coverage” means the average terminal hair coverage associated with one group of mice is: a. thinner or lighter in color on average; and/or b. covers a less of an average observed estimated percentage of the treated site than is observed in another group. The phrase “faster degree of terminal hair coverage” means that a degree of terminal hair coverage is achieved faster in time. The term “average” means the average across the mice in each group. The term “observed” or “visual observations” means visual examinations of the images as carried out by the unaided human eye.

The groups were then ranked in order of highest degree of terminal hair coverage to lowest degree of terminal hair coverage. The admixture ratio of acid to antioxidant to fatty acid mixture for an indicated admixture component is described as in the brackets [ ] following the term “admixture”.

Visual observation of images taken at week 0 (day that mice were shaved) demonstrated that, at this stage of the study, all the mice of Groups A-H had all terminal hair removed.

Distinctions in the degree of terminal hair coverage between Groups A-H were first observed in the images taken at the end of week 4. Based on the images taken at week 4, the Groups were ranked by degree of terminal hair coverage in Table III.

TABLE III Week 4 Ranking: Degree of Terminal Hair Coverage (lowest number corresponding Group to highest degree of coverage) D 1 A, B, C, F 2 E, H, G 3

The ranking in Table III demonstrates that Group D treated with Formulation 4 (5% minoxidil with the admixture [7:1:7]) provided the fastest and highest degree of terminal hair coverage of all the Groups. Groups A, B, C and F treated with Formulation 1 (5% minoxidil with the admixture [7:7:7]); Formulation 2 (5% minoxidil with the admixture [7:7:1]); Formulation 3 (5% minoxidil with the admixture [1:7:7]); and Formulation 6 (5% minoxidil with the admixture [3.5:3.5:3.5]), respectively, was second in providing the fastest and highest degree of terminal hair coverage of all the Groups. The Group E treated with Formulation 5 (the admixture [7:7:7] without minoxidil)); untreated Group G and Group H treated with Formulation 7 (5% minoxidil without the admixture) provided the least degree of terminal hair coverage at this stage of the study.

Table IV is the ranking of the degree of terminal hair coverage based on images taken at week 5.

TABLE IV Week 5 Ranking: Degree of Terminal Hair Coverage (lowest number corresponding Group to highest degree of coverage) A, B, C, D, F 1 E 2 G, H 3

The ranking in Table IV demonstrates that Groups A, B, C, D and F treated with Formulation 1 (5% minoxidil with the admixture [7:7:7]); Formulation 2 (5% minoxidil with the admixture [7:7:1]); Formulation 3 (5% minoxidil with the admixture [1:7:7]); Formulation 4 (5% minoxidil with the admixture [7:1:7]); and Formulation 6 (5% minoxidil with the admixture [3.5:3.5:3.5]), respectively provided the fastest and highest degree of terminal hair coverage of all the Groups at this stage of the study. Group E treated with Formulation 5 (the admixture [7:7:7] without minoxidil)) was second in providing the fastest and highest degree of terminal hair coverage of all the Groups. The untreated Group G and Group H treated with Formulation 7 (5% minoxidil alone) remained last at this ranking stage as providing the least degree of terminal hair coverage at this stage of the study.

A summary of the ranking data recorded in Tables III and IV indicate that:

    • a. mice skin treated with compositions containing minoxidil and the admixture of the present invention demonstrated a faster degree of terminal hair coverage than:
      • i. mice skin treated with compositions containing the equal amounts of minoxidil without the admixture;
      • ii. mice skin treated with compositions containing the equal amounts of the admixture without minoxidil and
      • iii. non-treated mice skin;
    • b. mice skin treated with compositions containing the admixture without minoxidil demonstrated a faster degree of terminal hair coverage than non-treated mice skin
    • c. mice skin treated with compositions containing the admixture where the ratio of alpha-keto acid to fatty acid mixture was 1:1, yet proportionally less antioxidant demonstrated a faster degree of terminal hair coverage than the admixture containing comparably lower amounts of the alpha-keto acid or the fatty acid mixture (i.e., given 1:1 ratios of antioxidant to fatty acid mixture and alpha-keto acid to antioxidant, respectively).

The following non-limiting examples further illustrate the compositions of the present disclosure. The ingredients in each example are prepared by mixing together the referenced ingredients using conventional mixing technology.

Hair Growth/Regrowth Formulations Example 1 Example 2 Example 3 Example 4 Example 5 (Lotion) (Lotion) (Cream) (Serum) (Lotion) INCI Name Trade Name % (w/w) % (w//w) % (w//w) % (w//w) % (w/w) Vendor Minoxidil Minoxidil 5.0 5.0 5.0 5.0 20.0 Pfizer Water Water USP 24.65 6.65 42.15 64.51 8.15 Finastride Finastride — 5.0 — — — WuHan GuangGu Pharm Ltd. bimatoprost bimatoprost — — — 0.05 — LGM Pharmaceuticals Inc. diazoxide diazoxide — — 2.0 — — Parchem Trading, Ltd. Ethanol Ethanol 20.0 20.0 — — 15.0 Parchem Trading, Ltd. Propylene Glycol Propylene 10.0 30.0 15.0 — 10.0 Parchem Glycol Trading, Ltd. Lactic Acid Purac PF 90 1.0 — 3.0 3.15 3.5 PURAC, Inc. Sodium Pyruvate Sodium 7.0 1.0 7.0 1.0 7.0 Torary Pyruvate NF Industries, Inc. Cocoa Butter Cocoa Butter 2.35 2.35 2.35 0.33 2.35 Newtown Foods USA Olive Oil Olive Oil 2.35 2.35 2.35 0.33 1.35 Ventura Food, LLC Cottonseed Oil Cottonseed 2.35 2.35 1.35 0.33 2.35 Ventura Food, Oil LLC Vitamin E Acetate Vitamin 7.00 7.00 1.00 7.00 7.00 BASF E Acetate Methylparaben Methylparaben 0.2 0.2 0.2 0.2 0.2 ISP NF Propylparaben Propylparaben 0.1 0.1 0.1 0.1 0.1 Tri-K NF Industries Polyoxyethylene Brij 72 6 6 6 6 6 ICI (2) Stearyl Ether Polyoxyethylene Brij 78 6 6 6 6 6 ICI (20) Stearyl Ether Cetyl Alcohol Cetyl Alcohol 6 6 6 6 — Henkel Co. Xanthan Gum Xanthan Gum — — 0.5 — 1.0 CPKelco pH 3-7 3-7 3-7 3-7 3-7

Hair Growth/Regrowth Ointments Example 6 Example 7 (Ointment) (Ointment) Percentage % Percentage % INCI Name Trade Name (w//w) (w//w) Vendor Minoxidil Minoxidil USP 5.0 Pfizer Finastride Finastride 5.0 WuHan GuangGu Pharm Ltd. Petrolatum White Petrolatum 52.25 55.0 Dow Chemicals USP Lactic Acid Purac PF 90 1.50 7.0 PURAC, Inc. Sodium Sodium Pyruvate 7.0 2.35 Torary Industries, Pyruvate NF Inc. Cocoa Butter Cocoa Butter 2.35 2.35 Newtown Foods USA Olive Oil Olive Oil 2.35 2.35 Ventura Food, LLC Cottonseed Cottonseed Oil 2.35 1.00 Ventura Oil Food, LLC Vitamin E Vitamin 7.0 0.2 BASF Acetate E Acetate Propylparaben Propylparaben NF 0.2 1.50 Tri-K Industries Propylene Propylene Glycol 20.0 23.25 Parchem Glycol Trading, Ltd. pH 3-7 3-7

Claims

1. A method for accelerating the onset of the anagen phase of hair growth in a mammal comprising topically applying an amount effective to induce hair growth of a composition, comprising:

a. at least one compound selected from the group consisting of compounds represented by the formulae:
and mixtures thereof, wherein R1 is a moiety selected from the group consisting of moieties of the formula —N(R3)(R4), wherein R3 and R4 are selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower aralkyl, and lower cycloalkyl, and taken together R3 and R4 may be a heterocyclic moiety selected from the group consisting of aziridinyl, azetidinyl, pyrrolidinyl, piperidino, hexahydroazepinyl, heptamethylenimino, octamethylenimino, morpholino, and 4-lower-alkylpiperazinyl, each of said heterocyclic moieties having attached as substituents on the carbon atoms 0 to 3 lower alkyl groups, hydroxy or alkoxy; and wherein R2 is selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower alkoxyalkyl, lower cycloalkyl, lower aryl, lower aralkyl, lower alkaryl, lower alkaralkyl, lower alkoxyaralkyl, and lower haloaralkyl and the pharmacologically acceptable acid addition salts thereof; and
b. from about 0.1% to about 99% by weight of an admixture, comprising: i. from about 0.01% to about 99.98% by weight of the admixture of an acid selected from the group consisting of intermediates of the Kreb cycle, non-Kreb cycle intermediate alpha-keto acid, derivatives thereof, salts thereof and mixtures thereof; ii. from about 0.01% to about 99.98% by weight of the admixture of an antioxidant; and iii. from about 0.01% to about 99.98% by weight of the admixture of a fatty acid mixture or fatty acid mixture source comprising at least 7 unsaturated or saturated fatty acids selected from the group consisting of butyric acid, caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, gadoleic acid, pentadecanoic acid, margaric acid, margaroleic acid, behenic acid, dihomolinoleic acid, arachidonic acid and lignoceric acid.

2. The method of claim 1, wherein the compound is minoxidil, the mammal is a human and the site of application is the human scalp.

3. A method for increasing the rate at which terminal hair appears on the skin of a mammal comprising the step of topically applying an amount effective to induce hair growth of a composition, comprising:

a. at least one compound selected from the group consisting of compounds represented by the formulae:
and mixtures thereof, wherein R1 is a moiety selected from the group consisting of moieties of the formula —N(R3)(R4), wherein R3 and R4 are selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower aralkyl, and lower cycloalkyl, and taken together R3 and R4 may be a heterocyclic moiety selected from the group consisting of aziridinyl, azetidinyl, pyrrolidinyl, piperidino, hexahydroazepinyl, heptamethylenimino, octamethylenimino, morpholino, and 4-lower-alkylpiperazinyl, each of said heterocyclic moieties having attached as substituents on the carbon atoms 0 to 3 lower alkyl groups, hydroxy or alkoxy; and wherein R2 is selected from the group consisting of hydrogen, lower alkyl, lower alkenyl, lower alkoxyalkyl, lower cycloalkyl, lower aryl, lower aralkyl, lower alkaryl, lower alkaralkyl, lower alkoxyaralkyl, and lower haloaralkyl and the pharmacologically acceptable acid addition salts thereof; and
b. from about 0.1% to about 99% by weight of an admixture, comprising: i. from about 0.01% to about 99.98% by weight of the admixture of an acid selected from the group consisting of intermediates of the Kreb cycle, non-Kreb cycle intermediate alpha-keto acid, derivatives thereof, salts thereof and mixtures thereof; ii. from about 0.01% to about 99.98% by weight of the admixture of an antioxidant; and iii. from about 0.01% to about 99.98% by weight of the admixture of a fatty acid mixture or fatty acid mixture source comprising at least 7 unsaturated or saturated fatty acids selected from the group consisting of butyric acid, caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, gadoleic acid, pentadecanoic acid, margaric acid, margaroleic acid, behenic acid, dihomolinoleic acid, arachidonic acid and lignoceric acid.
Referenced Cited
U.S. Patent Documents
5520918 May 28, 1996 Smith
5716638 February 10, 1998 Touitou
5834510 November 10, 1998 Yu et al.
6284234 September 4, 2001 Niemiec et al.
6419913 July 16, 2002 Niemiec et al.
6495498 December 17, 2002 Niemiec et al.
6762158 July 13, 2004 Lukenbach et al.
6858202 February 22, 2005 Niemiec et al.
6908889 June 21, 2005 Niemiec et al.
7074747 July 11, 2006 Lukenbach et al.
7262158 August 28, 2007 Lukenbach et al.
7273847 September 25, 2007 McCormack, Jr.
7351739 April 1, 2008 Ho et al.
7452527 November 18, 2008 Murad
8470880 June 25, 2013 Hu et al.
20030068297 April 10, 2003 Jain
20030176303 September 18, 2003 Niemiec et al.
20080069779 March 20, 2008 Tamarkin et al.
20080076828 March 27, 2008 Dalton et al.
20080206159 August 28, 2008 Tamarkin et al.
20090068160 March 12, 2009 Castiel et al.
20090087462 April 2, 2009 Trembley et al.
20090117146 May 7, 2009 Khan et al.
Foreign Patent Documents
3133132 March 1983 DE
3246265 June 1984 DE
4113346 October 1992 DE
0599819 June 1994 EP
1273299 January 2003 EP
2150588 July 1985 GB
3167111 July 1991 JP
2000038340 February 2000 JP
2002080328 March 2002 JP
20090088275 August 2009 KR
9717953 May 1997 WO
2004/064769 August 2004 WO
2007099398 September 2007 WO
2008/071897 June 2008 WO
2008/078905 July 2008 WO
Other references
  • Spectral.DNC-L—Topical Treatment for Advanced States of Baldness; www.gnpd.com; Record ID 852517; Jan. 2008.
  • Mintel Group; Women's Hair Re-Growth System; www.gnpd.com; Record ID 1106980; May 2009; pp. 1-12; pp. 1-3.
  • Grompone, Maria A., et al.; Composition and thermal properties of Rhea oil and its fractions; Eur. J. Lipid Sci. Technol. 107 (2005); pp. 762-766.
  • Miwa, Thomas K.; Jojoba Oil Wax Esters and Derived Fatty Acids and Alcohols: Gas Chromatographic Analyses; Journal of the American Oil Chemists Society.
Patent History
Patent number: 8877762
Type: Grant
Filed: May 15, 2012
Date of Patent: Nov 4, 2014
Patent Publication Number: 20120225898
Assignee: McNeil-PPC, Inc. (Skillman, NJ)
Inventors: Longsheng Hu (Piscataway, NJ), Virginia Streusand Goldman (Morris Plains, NJ), Josephine A. Minerva (Parsippany, NJ), Susan Wendling (Annandale, NJ)
Primary Examiner: Kevin E Weddington
Application Number: 13/471,810
Classifications
Current U.S. Class: 1,3-diazines (e.g., Pyrimidines, Etc.) (514/256); Carboxylic Acid, Percarboxylic Acid, Or Salt Thereof (e.g., Peracetic Acid, Etc.) (514/557); Higher Fatty Acid Or Salt Thereof (514/558); Ring Containing (514/559); Carbon To Carbon Unsaturation (514/560)
International Classification: A61K 31/505 (20060101); A61K 31/20 (20060101); A61K 31/19 (20060101); A61K 8/36 (20060101); A61Q 7/00 (20060101); A61K 8/67 (20060101); A61K 8/49 (20060101);